The best proof of intelligent life in space is that it hasn't come here.

I also believe - and hope - that politics and economics will cease to be as important in the future as they have been in the past; the time will come when most of our present controversies on these matters will seem as trivial, or as meaningless, as the theological debates in which the keenest minds of the Middle Ages dissipated their energies. Politics and economics are concerned with power and wealth, neither of which should be the primary, still less the exclusive, concern of full-grown men.

If man survives for as long as the least successful of the dinosaurs-those creatures whom we often deride as nature's failures-then we may be certain of this: for all but a vanishingly brief instant near the dawn of history, the word 'ship' will mean- 'spaceship.'

I have never grown up, but I will never stop growing.

The information age has been driven and dominated by technopreneurs. We now have to apply these technologies in saving lives, improving livelihoods and lifting millions of people out of squalor, misery and suffering. In other words, our focus must now move from the geeks to the meek.

Creationism, perhaps the most pernicious of the intellectual perversions now afflicting the American public.

Now I understand,” said the last man.